Global Impacts of Air Pollution
{"Image DocumentName": "Global Impacts of Air Pollution", "Image ImageDescription": "Ozone Depletion. Since the mid-1980s, atmospheric studies have detected a thinning of the ozone layer, including an ozone hole over Antarctica. Ozone depletion is entirely a result of human activity. The Montreal Protocol, which 186 countries had signed by 2003, calls for a phase-out in the production and use of most ozone-destroying chemicals by developed countries by the year 2005 and developing countries by the year Based on current trends in data, the return to pre-1980 ozone amounts over Antarctica is expected by the middle of this century.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}